<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/8/17
 * Time: 13:44
 */

date_default_timezone_set('PRC');   // 设置时区

$date1 = strtotime('2015-01-01');   //把日期转换成时间戳
$date2 = time();            //取当前时间的时间戳

$nowtime=strftime("%Y-%m-%d",$date2); //格式化输出日期

$days=round(($date1-$date2)/3600/24); //四舍五入

echo "今天是<font color=\"red\">".$nowtime."</font>";
echo "<br/>距".strftime("%Y-%m-%d ",$date1)."还有<font colr=\"red\">".$days."</font>天<br /><br /><br />";

echo "当前时间   " . date("Y-m-d h:i:s",strtotime("now")). "<br />";
echo "后天时间   " . date("Y-m-d h:i:s",strtotime("+2 day")). "<br />";
echo "下周时间   " . date("Y-m-d h:i:s",strtotime("+1 week")). "<br />";
echo "下月时间   " . date("Y-m-d h:i:s",strtotime("+1 month")). "<br />";
echo "明年时间   " . date("Y-m-d h:i:s",strtotime("+1 year")). "<br />";
echo "下周2天4小时2秒后的时间   " . date("Y-m-d h:i:s",strtotime("+1 week 2 days 4 hours 2 seconds")). "<br />";
echo "下周四时间   " . date("Y-m-d h:i:s",strtotime("next thursday")). "<br />";
echo "上周一时间   " . date("Y-m-d h:i:s",strtotime("last monday")). "<br />";
echo "2015-01-04  3天后的时间   " . date("Y-m-d h:i:s",strtotime("+3 day",strtotime('2015-01-04')));